They are not spawning at all. That's the point.

2LadyCFII, thanks for reply, but I've been 9 hours online in a row in game with full control and no sign if single mausoleum drop. I will continue monitoring on this matter.

EDIT: I don't remember exactly, but I think they stopped after stream of life returned to normal.

EDIT2: Wait..does same(old) mausoleum pieces respawn? If no, than it's all fine.